I've added a list to a column element and made it inline. I cannot get any addition items to have the style added to them. I have tried to reset the list and found that my additional list items are ignored when the inline classes are added.
Reproduction steps:
Add a list and set list style option to; inline(UL)
Result:
<ul class="list-inline">
<li class="list-inline-item">Item 1</li>
<li class="list-inline-item">Item 2</li>
<li class="list-inline-item">Item 3</li>
</ul>
Select list in overview
Click Add to list End.
Result: List item is added without class.
<ul class="list-inline">
<li class="list-inline-item">Item 1</li>
<li class="list-inline-item">Item 2</li>
<li class="list-inline-item">Item 3</li>
<li>Item 4</li>
</ul>
Select List and change style to any other option.
Change back to the inline style option.
Result: All list items except Item 4 have the inline styles applied.